Re: [LARTC] HTB is nor fair when 'borrowing? Can someone correct me or maybe Devik's HTB has a bug?

2004-06-18 Thread Ed Wildgoose

HTB should give fifty-fifty to U1 and U3... but it is not...
What is happening is that HTB gives about 350-380kbit for user3 and 
everything else(more than 600kbit) for user1... this period is marked 
as t1 on my graph...

Hmm, interesting.  Can you switch the order of your IP mappings around 
on this test so that you can prove that it is some feature of HTB that 
user1 always gets more bandwidth, and no something about that machine 
(ie if you swap ip's for user1 and 3 that it still remains (the new) 
user1 who gets all the b/w?

Obviously this should not be so, just curious to eliminate other 
possibilities

Ed W
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[LARTC] HTB is nor fair when 'borrowing? Can someone correct me or maybe Devik's HTB has a bug?

2004-06-17 Thread pljosh
Hello there!
Yesterday I started my experiments with HTB.
I configured it this way:
1: root HTB qdisc
 |
1:1 HTB class  rate 1000kbit
 |
 /---+--\
1:40   1:50   1:60
user1  user2  user3
rate 333  ceil 1000 for everyone.
User2 is disconnected and user1 and user3 are downloading.
For all the time (t1-t5) there are ONLY these two users downloading!
HTB should give fifty-fifty to U1 and U3... but it is not...
What is happening is that HTB gives about 350-380kbit for user3 and 
everything else(more than 600kbit) for user1... this period is marked as 
t1 on my graph...

Tahe a look at this:
http://www.icpnet.pl/~eniu/mgr/10170_600.png
(Y-axis shows bytes/s)
During my research I found that the more classes i create (each with 
rate=1000/no_of_users and ceil=1000) the more precise HTB is... When you 
look at my graph - in t1 there were 3 classes (1:40, 1:50, 1:60). Then 
I was relaunching my script with higher amount of classes - in t2 
there were 4 classes:rate=250/ceil=1000 in t3 I prepared 5 classes and 
finally in t4 there were 6 or 7 classes.

But even in t4 htb is not 100% fair (but it is acceptable).
In t5 i created only two classes 1:40 and 1:60 - and then HTB is 
perfect! It is so precise you can see only one line - blue as the red 
one is behind it...

For me it looks like HTB is very good when it doesnt have to borrow from 
other classes for more than one class. When two classes are fighting for 
BW abowe rate then HTB is not fair...

BUT MAYBE I configured something not the way it should be and this is 
why I have what you can see...??

-josh
p.s.
I've uploaded the contents of my script's output for each of the periods 
so you can see how it was configured at each time.
The script itself is also available.
I am running debian sarge with 2.4.26.
User1 has 192.168.3.4
User2 has 192.168.3.6

http://www.icpnet.pl/~eniu/mgr/t1
http://www.icpnet.pl/~eniu/mgr/t2
http://www.icpnet.pl/~eniu/mgr/t3
http://www.icpnet.pl/~eniu/mgr/t4
http://www.icpnet.pl/~eniu/mgr/t5
http://www.icpnet.pl/~eniu/mgr/rc.shape
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